Notes:
This demo is a mod.
I added the following:
Working collision detection
Most of the particle systems
Blinky, Pinky, Inky (Non-player tanks with AI) and Clyde (Rabbit
with AI)
Decals on walls when shot
Powerups and their effects
Camera angle change near walls

Powerups:
Fog Cube - Lays fog over the field for 30 seconds
Snowball - Makes it snow for 30 seconds
Teapot - Gives a speed boost to the one who picks it up for 30
seconds
Clyde - Clyde the bunny is faster than the tanks, but when shot
he drops a powerup with double the time duration
Powerup Stacking - If you get a powerup while it's effect is already
active, it adds to the duration rather than resetting it
Example - If there is 10 seconds left of snow and you get a snowball,
there will be 40 seconds left of snow

Score:
You gain 5 points for shooting a tank, and they lose 1 point
If you shoot a tank while it's blue, it gains 1 point and your
score stays the same
When a tank is shot while non-blue, it returns to it's spawn point
and becomes blue for a short duration